Electric heating and heat radiating plate



United States Patent Inventor Arthur Kuster Widen, Switzerland Appl. No. 699,923 Filed Jan. 23, 1968 Patented Dec. 1, 1970 Assignee Johanna Kuster-Wyss Widen, Aargau, Switzerland Priority Jan. 23, 1967 Switzerland No. 948/67 ELECTRIC HEATING AND HEAT RADlATlNG PLATE 2 Claims, 8 Drawing Figs.

U.S. Cl 219/459 Int. Cl. H051) 3/74 Field 01' Search 219/468, 553, 459

References Cited UNITED STATES PATENTS 1,555,268 9/1925 Colby 219/460 1,502,315 7/1924 Moller 219/462 3,204,085 9/1965 Busby 219/354 FOREIGN PATENTS 372,577 5/1932 Great Britain 219/464 Primary ExaminerBernard A. Gilheany Assistant Examiner-F. E. Bell Attorney-Jacob L. Kollin ELECTRIC HEATING AND HEAT RADIATING PLATE SUMMARY OF THE INVENTION This invention relates to an electric heating and heat radiating plate made of heat-resistant material.

The electric heating and heat radiating plate according to the present invention comprises an upper plate provided with a plurality of nozzle-shaped openings; a lower portion fixed to and located below said upper plate and enclosing a chamber having a bottom wall provided with a plurality of heat discharge openings; and an electric quartz heating element located in said chamber such that the heat it generates may leave said chambers through said nozzle-shaped openings and said discharge openings.

BRIEF DESCRIPTION OF THE DRAWING Two embodiments of the invention will now be described by way of example and with reference to the accompanying drawing, in which:

FIG. 1 is a side elevational view of a heating and heat radiating plate according to the invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a vertical cross section;

FIG. 4 is a side view of a second embodiment of the heating and heat radiating plate according to the invention;

FIG. 5 is a top plan view thereof;

FIG. 6 is a vertical cross section;

FIG. 7 is a top plan view, partly in section, of the heating and heat radiating plate shown in FIG. 1; and

FIG. 8 is a top plan view, partly in section, of the heating and heat radiating plate shown in FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENTS As can be seen from the drawing, a heating and heat radiating plate according to the invention comprises an upper plate 1 constituting the exposed face of said heating and heat radiating plate and a lower portion enclosing a chamber 2. The lower portion is rigidly fixed to said upper plate 1. The chamber 2 contains an electric quartz heating element 3.

The upper plate 1 is provided with a plurality of nozzleshaped openings 4 through which the heat generated by the electric quartz heating element 3 can leave the chamber 2, and for this reason the bottom wall of the chamber 2 is provided with a plurality of discharge openings 5 shown in FIGS. 3 and 6.

The heating and heat radiating plate is made of a heat-resistant ceramic material. However, the upper plate 1 can be made of metal, particularly of nonferrous metal. In both cases, more particularly in the case of ceramic material, the exposed face of the upper plate 1 may be glazed.

In the first embodiment of the invention shown in FIGS. 1,2,3 and 7, the chamber 2 is circular in cross section, while FIGS. 4,5,6, and 8 illustrating the second embodiment show a chamber 2 which is rectangular in cross section. Correspondingly, a circular or a square quartz heating element 3 or 3 is provided for each embodiment.

The upper plate of the heating and heat radiating plate of both embodiments may have raised portions. With an upper plate of ceramic material, the exposed surface can have raised portions serving as decorations as seen in FIG. 7 and 8. Dilation slits 6 can be provided when the upper plate 1 is made of ceramic material.

The illustrated heating and heat radiating plates are particularly suited to being built into table tops of fixed or movable tables at the places where plates or dishes are usually set. The heating and heat radiating plates may however also be mounted on or in walls for the purpose of radiantly heating rooms.

The advantage of the discharge openings 5 is that when the heating and heat radiating plates are built into table tops the legs of the persons seated at the table are also warmed which is particularly advantageous when the table is set up in the open.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Iclaim:

1. In a table provided with a top having an opening in said top, an electric heating and heat radiating plate made of heatresistant material adapted to be mounted in said opening, comprising an upper plate provided with a plurality of upwardly directed jet-shaped nozzle openings for radiating the heat and maintaining food warm, a lower portion of smaller cross section fixed to and located below said upper plate, said lower portion extending through said opening and enclosing a chamber having a bottom wall provided with a plurality of downwardly directed heat discharge openings, for maintaining a patron's feet warm and an electric quartz heating element of 30-50 watts located in said chamber, such that the heat it generates may leave said chamber upwardly through said nozzle-shaped openings and downwardly through said discharge openings, the upper plate and the lower portion consisting of a heat-resistant ceramic material.

2. An electric heating and heat radiating plate as claimed in claim 1, wherein the upper plate is provided with dilation slits. 

